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Machine for Finishing the Necks of Bottles.

No. 226,389 Patented April 27,1880.

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THOMAS W. SYNNOTT, OF WENONAH, NEW JERSEY.

MACHINE FOR FINISHING THE NECKS OF BOTTLES.

SPECIFICATION forming part of Letters Patent No. 226,889, dated April2'7, 1880.

Application filed February 12, 1880.

To all whom it may concern:

Be it known that I, THOMAS W. SYNNOTT, of enonah, in the county ofGloucester and State of New Jersey, have invented a new and usefulImprovement in Machines for Finishing the Necks of Bottles, of whichthefollowing is a specification, reference being had to the accompanyin gdrawings, in which Figure 1 is a top or plan view of the machineembodying my invention. Fig. 2 is a central longitudinal verticalsection in line a- :0, Fig. 1. Fig. 3 is a transverse section of aportion in line y y, Fig. 2.

Similar letters of reference indicate corresponding parts in the severalfigures.

- My invention consists of a plug adapted to enter the neck of a bottleand expand the metal thereof preparatory to the formation of the lip ofthe bottle.

It also consists of lip-formin g jaws connected to amechanically-operated mandrel or shaft, whereby the work of finishingthe neck and forming the lip may be expeditiously accomplished.

Referring to the drawings, A represents a frame, on which is mounted amandrel or shaft, B, carrying at one end a pulley, B, and at the otherend a head, 0, to whose outer end is fixed a plug, D, and to which arepivoted jaws E, whose heads a eircumscribe the plug D, and each has onits inner face, near the inner termination of said plug, an offset orshoulder, b. The mandrel or shaft B is hollow, and the plug D is dividedin a longitudinal direction to form sections (1 d, which are hingedtogether so that they may be separated, for which purpose I employ asliding rod or shaft, F, which is passed through the hollow shaft B, andhas its point adapted to enter between the two sections (Z d, the innerfaces of which are properly grooved to receive said point. It is evidentthat when the point presses against the sections they separate; but thismay also be accomplished by forming a button or head on the rod and away or slot in one section, the button or head riding within or behindthe walls of said way, and thus serving to move out said section whenthe rod is advanced.

The advantage of employing said button or head is that it causes theclosing of thesection by a positive motion when the rodFis returned toits first position. The inner ends ofthejaws E are turned inwardly orhave cam, bevel, tapering, or curved faces, as at 6, against which bearsthe inner coincident face, f, ofan annulus or ring, G, which is securedto a carriage, H, consisting of longitudinal pieces g g, mounted on theframe A, and an end vertical connecting-piece, h, to which motion may beimparted by a lever, treadle, or other mechanism, or by hand or otherpower, said piece 71 carrying a screw, h, for adjusting the rod F.

The rod F has its end opposite to the point or button provided with ahead, k, which bears against the screwh, so that the rod is advanced bythe carriage H, and said rod is so gaged or adjusted that the jaws E areoperated in advance of the expansion or opening of the plug D. Thereturn motions of the carriage H and rod F are accomplished by means ofsprings l L, suitably applied, and the heads of the jaws E areforcedtoward each other,and thus against the metal, by means of springs m m,properly located.

The operation is as follows: The shaft B is rotated by any suitablepower applied to the pulley B or elsewhere. The carriage H is ad.-va-nced and the jawsE are pressed by the annir lus G, so as to separatethe heads a from the plug D. The neck of the bottle is heated to a softstate and the bottle, properly held by a pontil or other tool, is thenpresented to the plug D, so that its neck receives said plug theentrance of the neck being limited by the back plate,D, at the base orinner termination of the plug D. The carriage H continues its motion,and the rod F operates the plug 'D, so as to expand it or separate itssections, thus enlarging the neck of the bottle'and expanding the metal.The carriage H being released returns to its first position, the plugcontracts, and the heads of the jaws close against the metal. As saidjaws rotate the offsets or shoulders b raise the metal and form the lipof the bottom, and the pressure of the jaws causes the metal of the neckto assume the form of the closed plug, thus finishing the neck. Thecarriage is again advanced, and the heads of the jaws separate, so as toclear the lip of the bottle, and the removal of the bottle may then beaccomplished. The jaws are again opened, and another bottle is appliedto the plug, and the other operations are repeated.

The necks of the bottles will be found to be uniform, and the work isperformed in an eX- peditious manner. The contour of the offsets b maybe varied relatively to the shape desired to be imparted to the lip ofthe bottle.

I am aware that machines for finishing the necks of bottles have beenprovided with arotating hollow shaft carrying jaws for closing upon theexterior of the neck and shaping it, and an expansible plug forspreading the in terior of the neck, the jaws being operated by a collarand a spring, and the plug being eX- panded by a reciprocating rodwithin said shaft. I do not claim such construction or operation of saidmachines.

What I do claim is-- 1. The collar G,in combination with carriage H,consisting of longitudinal rods 9 g and end piece, h, the reciprocatingrod F, the rotating shaft B, the expansible plug D, and the jaws E E,said rod and hollow shaft and the rear ends of said jaws being withinsaid collar.

2. The sectional expansible plug D, provided with an internallongitudinal guideway, in combination with a reciprocating rod, F, whichcarries a button, by the engagement whereof with said gnidewa-y the saidplug is opened and closed by positive force. ,7

T. W. SYNNOTT.

Witnesses JOHN A. WVInDERsHEIM, J. H. JEFFENs.

